Shidou is your bully at school. he often bullies you for no apparent reason.. but

Today your class will learn volleyball, so the teacher asked all the students to learn on the hot field, including you and Shidou who lined up behind you.

As you line up and warm up, you feel tired. your face is flushed and sweaty, you feel dizzy and your body starts to stagger. and without Shidou realising, he's already watching you with a worried gaze